`tstei.com`

DNSSEC	⚠️ Not signed
NS	`pdns69.ultradns.com` ⭐
		A	2001:502:f3ff::69^{🇺🇸 MAINT-ID-120082001:502:f3ff::/48 Neustar}
			PTR	`pdns69.ultradns.com`
		A	156.154.64.69^{🇺🇸 MAINT-ID-12008156.154.64.0/24 Neustar}
			PTR	`pdns69.ultradns.com`
NS	`cbru.br.ns.els-gms.att.net`
		A	2001:1890:1ff:9f0:68:94:156:132^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`cbru.br.ns.els-gms.att.net`
		A	68.94.156.132^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`cbru.br.ns.els-gms.att.net`
NS	`cmtu.mt.ns.els-gms.att.net` ⚠️ Not in parent delegation
		A	2001:1890:1ff:9f1:99:99:99:132^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`cmtu.mt.ns.els-gms.att.net`
		A	99.99.99.132^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`cmtu.mt.ns.els-gms.att.net`
NS	`dbru.br.ns.els-gms.att.net`
		A	2001:1890:1ff:9f0:68:94:156:134^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`dbru.br.ns.els-gms.att.net`
		A	68.94.156.134^{🇺🇸 AS701868.88.0.0/13 ARIN Allocation SBC Internet Services}
			PTR	`dbru.br.ns.els-gms.att.net`
NS	`dmtu.mt.ns.els-gms.att.net` ⚠️ Not in zone NS records
		A	2001:1890:1ff:9f1:99:99:99:134^{🇺🇸 AS70182001:1890::/29 AT&T Enterprises, LLC}
			PTR	`dmtu.mt.ns.els-gms.att.net`
		A	99.99.99.134^{🇺🇸 AS701899.96.0.0/13 AT&T Enterprises, LLC}
			PTR	`dmtu.mt.ns.els-gms.att.net`
NS	`pdns69.ultradns.biz`
		A	2610:a1:1015::69^{🇺🇸 MAINT-ID-120082610:a1:1015::/48 Neustar}
			PTR	`pdns69.ultradns.biz`
		A	156.154.66.69^{🇺🇸 MAINT-ID-12008156.154.66.0/24 Neustar}
			PTR	`pdns69.ultradns.biz`
NS	`pdns69.ultradns.co.uk` ⚠️ Not in parent delegation
		A	2610:a1:1017::69^{🇺🇸 MAINT-ID-120082610:a1:1017::/48 Neustar}
			PTR	`pdns69.ultradns.co.uk`
		A	156.154.69.69^{🇺🇸 MAINT-ID-12008156.154.69.0/24 Neustar}
			PTR	`pdns69.ultradns.co.uk`
NS	`pdns69.ultradns.info` ⚠️ Not in parent delegation
		A	2610:a1:1016::69^{🇺🇸 MAINT-ID-120082610:a1:1016::/48 Neustar}
			PTR	`pdns69.ultradns.info`
		A	156.154.68.69^{🇺🇸 MAINT-ID-12008156.154.68.0/24 Neustar}
			PTR	`pdns69.ultradns.info`
NS	`pdns69.ultradns.net`
		A	2610:a1:1014::69^{🇺🇸 MAINT-ID-120082610:a1:1014::/48 Neustar}
			PTR	`pdns69.ultradns.net`
		A	156.154.65.69^{🇺🇸 MAINT-ID-12008156.154.65.0/24 Neustar}
			PTR	`pdns69.ultradns.net`
NS	`pdns69.ultradns.org`
		A	2001:502:4612::69^{🇺🇸 MAINT-ID-120082001:502:4612::/48 Neustar}
			PTR	`pdns69.ultradns.org`
		A	156.154.67.69^{🇺🇸 MAINT-ID-12008156.154.67.0/24 Neustar}
			PTR	`pdns69.ultradns.org`
MX	`us-smtp-inbound-1.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
MX	`us-smtp-inbound-2.mimecast.com` ⭐
		A	170.10.128.141^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.221^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.128.242^{🇺🇸 Mimecast-NA170.10.128.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.141^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.221^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
		A	170.10.132.242^{🇺🇸 Mimecast-NA170.10.132.0/23 191 Spring St Lexington MA 02421 United States}
			PTR	`us-smtp-inbound-1.mimecast.com`
			PTR	`us-smtp-inbound-2.mimecast.com`
SOA	`pdns69.ultradns.com`thomas\@dylewski.erieinsurance.com 2014-09-16 #36

`com`

	DNSSEC	🔒 Signed (DS record present)
	NS	`a.gtld-servers.net` ⭐
	NS	`b.gtld-servers.net`
	NS	`c.gtld-servers.net`
	NS	`d.gtld-servers.net`
	NS	`e.gtld-servers.net`
	NS	`f.gtld-servers.net`
	NS	`g.gtld-servers.net`
	NS	`h.gtld-servers.net`
	NS	`i.gtld-servers.net`
	NS	`j.gtld-servers.net`
	NS	`k.gtld-servers.net`
	NS	`l.gtld-servers.net`
	NS	`m.gtld-servers.net`
	SOA	`a.gtld-servers.net`nstld@verisign-grs.com serial=1784117302

Same first word

tstei.com

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DNS History

13 records (12 active, 1 former)

●NScbru.br.ns.els-gms.att.net2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NScmtu.mt.ns.els-gms.att.net2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSdbru.br.ns.els-gms.att.net2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSdmtu.mt.ns.els-gms.att.net2026-07-01 → 2026-07-15 · 3 obs

○ 2015-07-21 16:29:00
● 2026-07-01 14:47:16
● 2026-07-15 12:19:16

●NSpdns69.ultradns.biz2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSpdns69.ultradns.co.uk2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSpdns69.ultradns.com2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSpdns69.ultradns.info2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSpdns69.ultradns.net2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

●NSpdns69.ultradns.org2015-07-21 → 2026-07-15 · 2 obs

● 2015-07-21 16:29:00
● 2026-07-15 12:19:16

○MXmail.tstei.com2015-07-21 → 2016-07-01 · 4 obs

● 2015-07-21 16:29:00
● 2016-07-01 17:34:00
○ 2017-08-01 15:42:46
○ 2026-07-15 12:19:16

●MXus-smtp-inbound-1.mimecast.com2017-08-01 → 2026-07-15 · 3 obs

○ 2016-07-01 17:34:00
● 2017-08-01 15:42:46
● 2026-07-15 12:19:16

●MXus-smtp-inbound-2.mimecast.com2017-08-01 → 2026-07-15 · 3 obs

○ 2016-07-01 17:34:00
● 2017-08-01 15:42:46
● 2026-07-15 12:19:16

🔍 DNS Trace

Analysis

Name Servers

tstei.com delegates authority to 10 name servers: pdns69.ultradns.biz, pdns69.ultradns.com, pdns69.ultradns.info plus 7 other.

There is at least partial name server overlap between tstei.com and other domains — stansport.com, superfreshfoodsga.com, 160-27.105.36.209.in-addr.arpa and two more among them.

These name servers regularly appear alongside pdns69.ultradns.net, pdns69.ultradns.org, pdns69.ultradns.co.uk and 7 other name servers in NS record sets.

Host names with two IP numbers:

pdns69.ultradns.biz directs traffic to 156.154.66.69 and 2610:a1:1015::69.

pdns69.ultradns.com directs traffic to 156.154.64.69 and 2001:502:f3ff::69.

pdns69.ultradns.info directs traffic to 156.154.68.69 and 2610:a1:1016::69.

pdns69.ultradns.net directs traffic to 156.154.65.69 and 2610:a1:1014::69.

pdns69.ultradns.org directs traffic to 156.154.67.69 and 2001:502:4612::69.

pdns69.ultradns.co.uk directs traffic to 156.154.69.69 and 2610:a1:1017::69.

cbru.br.ns.els-gms.att.net directs traffic to 68.94.156.132 and 2001:1890:1ff:9f0:68:94:156:132.

dbru.br.ns.els-gms.att.net directs traffic to 68.94.156.134 and 2001:1890:1ff:9f0:68:94:156:134.

cmtu.mt.ns.els-gms.att.net directs traffic to 99.99.99.132 and 2001:1890:1ff:9f1:99:99:99:132.

dmtu.mt.ns.els-gms.att.net directs traffic to 99.99.99.134 and 2001:1890:1ff:9f1:99:99:99:134.

Mail Servers

tstei.com has two mail servers: us-smtp-inbound-1.mimecast.com and us-smtp-inbound-2.mimecast.com.

tstei.com shares the same mail server setup as other domains, including rsaworldwide.com, grbbank.com, anthonytravel.com and two others.

tstei.com and a number of other domains — kerrcharities.org, starfit.es, sundanceinsurance.com and m.ross-simons.com among them — share at least some of the same mail servers.